Thermodynamics analysis of a hybrid system based on a combination of hydrogen fueled compressed air energy storage system and water electrolysis hydrogen generator |
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| Affiliation: | 1. School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China;2. Harbin Coupling Power Engineering Technology Center Co., Ltd., Harbin 150000, China;1. Department of Chemical Engineering, Federal University of São Carlos (DEQ-UFSCar), São Carlos, Brazil;2. Chemistry Institute, Federal University of Goiás (IQ-UFG), Goiânia, Brazil;3. São Carlos Institute of Chemistry, University of São Paulo (IQSC-USP), São Carlos, Brazil;1. At?l?m University, Graduate School of Natural and Applied Sciences, Department of Mechanical Engineering, Ankara, Turkey;2. At?l?m University, Department of Energy Systems Engineering, Ankara, Turkey;1. School of Chemistry and Chemical Engineering, North University of China, Xueyuan Road 3, Taiyuan 030051, People''s Republic of China;2. School of Environment and Safety Engineering, North University of China, Xueyuan Road 3, Taiyuan 030051, People''s Republic of China;1. Gas-Solid Interaction Laboratory, Department of Chemical and Biochemical Engineering, Indian Institute of Technology Patna, Bihta, Patna, 801 106, Bihar, India;2. Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune – 411008, India;3. Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad–201002, India |
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| Abstract: | In front of the opportunity of the rapid development of renewable energy power generation, energy storage is playing a more important role in improving its utilization efficiency. In this paper, a hybrid energy system based on combination of hydrogen fueled compressed air energy storage system and water electrolysis hydrogen generator is proposed. The superfluous renewable energy power is charged by compressing the air and/or producing hydrogen through water electrolysis. A hydrogen combustor is introduced to raise the air temperature in the discharging process. A thermodynamic model of the proposed system is built. Energy and exergy analysis found that under the design condition, the proposed system can achieve a round trip efficiency of 65.11%, an exergy efficiency of 79.23%, and an energy storage density of 5.85 kWh/m3. The exergy loss of water electrolysis hydrogen generator and hydrogen combustor rank in the top two of all components. Sensitivity analysis indicates that the outlet temperature of hydrogen combustor and specific energy consumption of water electrolysis hydrogen generator are the crucial influencing factor of system performance. |
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| Keywords: | Compressed air energy storage Hydrogen production through water electrolysis Hydrogen combustor Thermodynamic analysis Exergy analysis |
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